Spline AI

Spline AI is an AI-powered 3D design and generation solution built into the Spline platform. It helps users turn text descriptions and two-dimensional images into three-dimensional models that can be edited, animated, and incorporated into interactive 3D scenes. The platform is designed for designers, digital artists, developers, product teams, and other creators who want to produce 3D content without building every object manually.

One of Spline AI’s main capabilities is Text-to-3D generation. Users can describe an object or concept in natural language, and the AI uses the prompt to generate a corresponding 3D model. Descriptions can include details about an object’s appearance, shape, materials, and visual style. This makes it useful for creating digital props, product concepts, characters, decorative objects, and other assets for interactive experiences. Users can experiment with different descriptions to explore creative directions and select a result that best fits their project.

Spline also provides Image-to-3D generation, which allows users to upload a two-dimensional image and use it as a reference for creating a 3D model. The system analyses the image to estimate the object’s depth and structure before generating a three-dimensional representation. Users can combine a written prompt with a reference image, allowing the image to guide the overall appearance while the text describes additional details. Spline recommends using a clear, front-facing image of a single object for better results, particularly when the object has a recognisable shape.

The AI generation workflow provides image previews before producing the final 3D mesh. Users can review the available previews and select the one they prefer. If the results do not match their expectations, they can adjust the prompt and generate another set rather than settling for an unsuitable model. This preview-based process gives creators more control over the result and helps reduce unnecessary generation attempts.

Spline’s AI generation system offers access to different model engines, including Hunyuan3D, Hunyuan 3.1 Pro, Trellis 2, and Meshy. These options are designed to handle different generation requirements. Hunyuan3D provides a balance between generation speed and detail, while Hunyuan 3.1 Pro is intended for more detailed geometry. Trellis 2 is useful for certain complex shapes, including objects with intersecting or connected structures, while Meshy provides another generation option for users seeking clean results with less additional cleanup. The available models and controls may change as Spline updates its generation system.

A major advantage of Spline AI is that generated models can be brought directly into the platform’s 3D editor. Users do not have to treat the generated asset as a separate final image. Instead, they can open it in an existing scene or add it to the scene they are currently working on. Once imported, the model becomes a regular editable Spline object that can be positioned, restyled, and incorporated into a larger composition. This connects AI generation with the rest of the design process.

The Spline 3D editor provides tools for modelling, sculpting, primitive objects, boolean operations, materials, lighting, cameras, animation, and physics. Creators can use these tools to refine generated assets and build complete interactive environments. The material system supports layered materials, while lighting and post-processing controls help users develop the appearance of their scenes. Animation features include states, keyframes, events, and physics-based interactions, allowing objects to respond to user actions and environmental conditions.

Spline also supports interactive design. Users can create scenes in which objects respond to clicks, scrolling, keyboard input, and collisions. These features make the platform suitable for more than static 3D illustrations. Designers can build interactive product demonstrations, animated website elements, digital presentations, immersive experiences, and other visual projects that encourage users to engage with the content.

The platform includes a separate 2D editor called Hana, which provides a canvas for designing interfaces and animated graphics. It supports visual effects and 3D elements, giving creators another environment for producing digital content. Spline’s AI tools are available across its creative workflow, with AI credits shared between supported generation features in the 2D and 3D editors.

For developers and teams, Spline provides several ways to publish and integrate projects. Users can publish interactive scenes to the web, share them through links, embed them in websites, or export code for use in their own development environments. The platform also supports native publishing options for Apple and Android applications. Apple workflows include Metal-based rendering and SwiftUI integration, while Android workflows use Vulkan and Jetpack Compose. These options allow teams to use Spline content in different digital products rather than limiting their work to the browser.

Spline has also expanded its workflow to support AI agents through the Model Context Protocol (MCP). Compatible agents can interact with Spline scenes, read scene information, create or modify objects, frame views, and inspect results. The platform identifies tools such as Claude, ChatGPT, Cursor, and Codex as possible agent connections, alongside custom agents that support MCP. This allows users to combine AI-assisted scene creation with manual editing and team collaboration.

Real-time collaboration is another important part of Spline. Teams can work on shared files, review changes, leave comments, and continue editing within the same project. The platform is designed to let AI agents create an initial version of a scene while designers refine the result. This can help teams divide creative and technical responsibilities without repeatedly transferring assets between separate tools.

Spline uses a subscription-based workspace system with monthly AI credits on paid plans. The credits are shared across AI features, including AI 3D generation, AI textures, and supported AI agent operations. The cost of generating a model depends on the selected operation and generation settings. A completed 3D model can consume credits for both image previews and mesh generation, so one model may require more than a single generation charge. Additional credits can be purchased when needed, subject to the plan’s limits.

The platform is suitable for web designers, product designers, game developers, digital artists, marketing teams, educators, and businesses creating interactive visual experiences. It can be used to develop product demonstrations, 3D website content, interactive brand experiences, learning materials, and prototypes. Its combination of AI generation, scene editing, animation, collaboration, and publishing makes it useful for creators who want to move from an initial idea to a working interactive experience in one environment.

However, Spline AI has limitations. Generated models can contain inaccurate shapes or uneven geometry, and users should inspect the results before using them in a finished project. The quality of image-based generation also depends on the reference image, while complex objects with sharp edges or precise mechanical details may be more difficult to reproduce accurately. Generated models can contain more detail than manually created objects, which may affect scene performance when several are used together. Users may need to optimise their scenes before publishing them.

Overall, Spline AI combines AI-powered 3D generation with a broader interactive design and publishing platform. Its ability to generate models from prompts and images, bring them directly into editable scenes, and publish projects to web and mobile environments makes it useful for a range of creative and development workflows. It is particularly suitable for interactive 3D design and rapid prototyping, although users should expect to review and refine generated assets when accuracy and performance are important.

Pricing

• Free: $0/month — limited personal files, unlimited viewers, access to the Spline Library, and web exports with a Spline watermark. No monthly AI credits are included.
• Hobby: $15/month or $12/month when billed annually — 2,000 AI credits per seat/month, unlimited 2D and 3D files, AI generation, and watermark-free web exports.
• Pro: $30/month or $25/month when billed annually — 3,000 AI credits per seat/month, video export, Apple and Android exports, unlimited folders and projects, and additional design and development features.
• Max: $70/month or $60/month when billed annually — 10,000 AI credits per seat/month, higher AI usage limits, and additional media-generation capacity.
• Enterprise: Custom pricing — custom AI credits, team administration, centralised billing, SSO, self-hosted exports, priority support, and enterprise services.

Review

Spline AI is a useful option for creators who want to generate 3D models from text and images and continue working on those models without leaving the same platform. Its preview-based generation process, multiple model engines, and direct connection to the 3D editor make it practical for developing assets and prototypes. The wider Spline environment adds modelling, materials, animation, physics, and interactive design tools.

The platform is particularly valuable for web designers, product teams, and developers who need interactive 3D content for websites and applications. Its publishing options for web, Apple, and Android projects, together with MCP support, provide flexibility for both designers and development teams. Real-time collaboration also makes it suitable for shared creative projects.

Its main limitations are the quality variations associated with AI-generated geometry and the credit-based pricing system. The free plan does not include AI credits, so users who want to use AI generation need a paid subscription. Complex models may also require manual refinement and scene optimisation before publication. Spline AI is a strong choice for interactive 3D creation, but it is not a complete replacement for specialist modelling software when precise geometry and advanced production control are required.